The file contains data compiled for the Resource Conservation Recovery Act. Notification of Regulated Waste Activity, EPA Form 8700-12 was used to collect the data. The file was updated with information compiled from the Application for a Hazardous Waste Permit-Part A, EPA Form 8700-23. Hazardous Waste Data Management System (HWDMS) contains data on approximately 4,700 treatment, storage and disposal facilities (TSDs), approximately 20,000 transporters and approximately 276,000 large and small quantity generators. The data indicates whether a facility is a generator, treatment/storer/disposer, and/or transporter of hazardous waste. Information stored in the database includes: A listing of code numbers of waste handled taken from 40CFR Part 261, Facility Name, EPA Identification Number, Addresses, Owner and Operator Information, Facility Contact Name and Phone Number, SIC Codes, RCRA Waste Codes handled, Permit Process Codes and Permit Issuance Data.